f3d559b1-f95b-49df-e044-00144fdd4fa6engutf8datasetdataset - Marine DataGeoscience Australia+61 2 6249 9966+61 2 6249 9960GPO Box 378CanberraACT2601Australiasales@ga.gov.aupointOfContact2014-05-16ANZLIC Metadata Profile: An Australian/New Zealand Profile of AS/NZS ISO 19115:2005, Geographic information - Metadata1.1http://www.ga.gov.au/metadata-gateway/metadata/record/79171/Frontier basins of the west Australia continental margin: Major and trace elements of seabed sediments.2014publication79171Radke, L.C.authorPappas, W.authorWebber, E.authorGeoscience AustraliaCanberrapublisherGeoscience Australia marine reconnaissance survey GA2476 to the west Australian continental margin was undertaken as part of the Australian Government's Offshore Energy Program between 25 October 2008 and 19 January 2009 using the German research vessel RV Sonne. The survey acquired geological, geophysical, oceanographic and biological data over poorly known areas of Australia's western continental margin in order to improve knowledge of frontier sedimentary basins and marginal plateaus, and allow assessment of their petroleum prospectivity and environmental significance. Four key areas were targeted: the Zeewyck and Houtman sub-basins (Perth Basin), the Cuvier margin (northwest of the Southern Carnarvon Basin), and the Cuvier Plateau (a sub-feature of the Wallaby Plateau). These areas were mapped using multi-beam sonar, shallow seismic, magnetics and gravity. Over the duration of the survey a total of 229,000 km2 (26,500 line-km) of seabed was mapped with the multibeam sonar, 25,000 line-km of digital shallow seismic reflection data and 25,000 line-km of gravity and magnetic data. Sampling sites covering a range of seabed features were identified from the preliminary analysis of the multi-beam bathymetry grids and pre-existing geophysical data (seismic and gravity). A variety of sampling equipment was deployed over the duration of the survey, including ocean floor observation systems (OFOS), deep-sea TV controlled grab (BODO), boxcores, rock dredges, conductivity-temperature depth profilers (CTD), and epibenthic sleds. Different combinations of equipment were used at each station depending on the morphology of the seabed and objectives of each site. A total of 62 stations were examined throughout the survey, including 16 over the Houtman Sub-basin, 16 over the Zeewyck Subbasin, 13 in the Cuvier margin, 12 over the Cuvier Plateau and four in the Indian Ocean. This dataset comprises total chlorin concentrations and chlorin indices measured on the upper 2 cm of seabed sediments. For more information: Daniell, J., Jorgensen, D.C., Anderson, T., Borissova, I., Burq, S., Heap, A.D., Hughes, M., Mantle, D., Nelson, G., Nichol, S., Nicholson, C., Payne, D., Przeslawski, R., Radke, L., Siwabessy, J., Smith, C., and Shipboard Party, (2010). Frontier Basins of the West Australian Continental Margin: Post-survey Report of Marine Reconnaissance and Geological Sampling Survey GA2476. Geoscience Australia, Record 2009/38, 229ppCommonwealth of Australia (Geoscience Australia)ownerCommonwealth of Australia (Geoscience Australia)02 6249 996602 6249 9960Cnr Jerrabomberra Ave and Hindmarsh DrGPO Box 378CanberraACT2601Australiasales@ga.gov.aucustodianasNeededMarine DataMarine GeoscienceAustralian and New Zealand Standard Research Classification (ANZSRC)2008-03-31+11:00publicationAustralian Bureau of Statistics (ABS)http://www.abs.gov.au/ausstats/abs@.nsf/Latestproducts/1297.0Main%20Features32008?opendocument&tabname=Summary&prodno=1297.0&issue=2008&num=&view=owner9780642483584otherRestrictionslicenselicenseotherRestrictionsCreative Commons Attribution 3.0 Australia Licenceunclassifiedengutf8oceans106.70595114.6088-31.23515-21.775783xlsxUnknownGeoscience Australia+61 2 6249 9966+61 2 6249 9960GPO Box 378CanberraACT2601Australiasales@ga.gov.audistributoronLinehttp://www.ga.gov.au/corporate_data/79171/79171_Western_Margin_XRF_Major_Trace_Elements_v2.xlsWWW:DOWNLOAD-1.0-http--download79171_Western_Margin_XRF_Major_Trace_Elements_v2.xlsDownload the spreadsheet (xlsx) [< 1 MB]downloadhttp://dx.doi.org/10.4225/25/54B861B21E84CWWW:LINK-1.0-http--linkDataset DOIDataset DOIinformationdatasetBottom sediments were collected using either a Van Veen grab or a box core. The surface sediments (0-2 cm) within the grab were spooned into falcon vials and the porewaters were removed by centrifugation. The samples were then frozen for transport to the laboratories at Geoscience Australia (GA) where they were freeze-dried and ground in a tungsten carbide mill. Major and trace elements were determined by X-ray fluorescence at GA using a Phillips PW204 4kW sequential spectrometer. A more comprehensive suite of trace elements was determined using a AGILENT 7500ce ICP-MS, also at GA. Thanks to the crew of the RV Sonne for assisting with sample collection. The attribute accuracies are moderate: <5% for majors and <10% for traces.unclassified